Diamond was diagnosed with terminal brain cancer. She was terrified what would happen to her girls. She turned to her best friend and made an extraordinary request: she asked her to adopt her four daughters.

Laura told INSIDE EDITION, "It's really hard and difficult for all of us. Nobody really knew how to handle it."

Laura said, “I wish I could say it was this was really long, sit-down talk, where we went over everything, but it wasn't. She said, ‘Laura, I want to talk about the girls. If ever anything happens to me, I want you to take my girls.' And I said, ‘Okay.’ That was the only time we ever talked about it,” she said.

In April, Diamond passed away. True to her word, Laura And Ricco took legal guardianship of Tara, 12, Lilly, 5, Samona, 8, and Ella, 7. They all moved into the Ruffino home outside Buffalo, New York.

“We had a conversation and I told them their real mom who's the best mom ever, is in heaven, but while they are on earth, I'll be the Earth mom,” said Laura.

Naturally, things in the Ruffino household have changed in a big way. Oldest daughter Isabella 13, is helping her new sisters settle in.

Isabella told INSIDE EDITION, “I want them to be happy and welcome to the new family, too. I want them to feel like at home again.”

Everything has grown -- the laundry, the grocery list, the daily chores," said Laura.

Sleeping arrangements in the modest, three-bedroom house has been the biggest challenge so far.

Isabella said she sleeps elsewhere in the house so her new sisters could have her room.